Does Findster Duo fit in my pet’s collar? Jane Jonson Updated January 13, 2017 15:41 Follow Yes, Findster Duo has a clip you could easily attach to your pet’s collar. Related articles 7. Attaching the Pet module to a collar 🎥 What is the battery life of the Findster Duo modules? 11. Updating the Firmware of Guardian/Pet modules 🎥 Is Findster Duo safe for my pet? How many Pet modules can I connect to a single Guardian? Have more questions? Submit a Request Comments 0 comments Please sign in to leave a comment.